[OT] The Usual Arithmetic Confusions

[Adam Ruppe]

On Wednesday, 2 February 2022 at 23:27:05 UTC, Walter Bright 
wrote:
> One of the (largely hidden because it works so well) advances D 
> has over C is Value Range Propagation, where automatic 
> conversions of integers to smaller integers is only done if no 
> bits are lost.

D's behavior is worse than C's in actual use. This is a source of 
constant annoyance when doing anything with the byte and short 
types.

The value range propagation only works inside single expressions 
and is too conservative to help much in real code.